Post Profile






New Method for Measuring Lots of Resistors Using Very Few Wires

[Daqq] is back at it again with the linear algebra, and he’s now come up with a method for determining the resistance of lots of resistors using little of wires and loads of math. Like any reasonable person, [daqq] decided it would be fun to “solve one of those nasty [electrical engineering] puzzles/exercises where you start out with a horrible mess of wires and resistors and you are supposed to calculate the resistance between two nodes.
read more

share

Related Posts


Nystrom sampling based on leverage scores may be a bad idea

Academics / Mathematics : Chapter Zero

One of the latest hot topics in randomized linear algebra seems to be sampling using leverage scores. There’re a lot of instances where for whatever reason, you want to sample from the columns (or rows, or both) of a matrix, to avoi...

What’s in a benchmark? Supercomputers get a new one to reflect new workloads

Technology : Gigaom

Supercomputers have graduated from linear algebra to differential equations, and so the guys who rank the world's top machines have decided to change the benchmark that determines which computer is on top.

Measuring 185 µ? In Circuit

Technology / Gadgets : Hack a Day

To measure resistance, you usually have to take the resistor to be tested out of the circuit, and sometimes that’s impossible. If you’re using a multimeter, measuring very small resistances is difficult to say the least. Combine bot...

Tensors 5: Scalars

Academics : The Endeavour

There are two uses of the word scalar, one from linear algebra and another from tensor calculus. In linear algebra, vector spaces have a field of scalars. This is where the coefficients in linear combinations come from. For real vec...

Four short links: 10 October 2012

Technology : O'Reilly Radar

An Intuitive Guide to Linear Algebra — Here’s the linear algebra introduction I wish I had. I wish I’d had it, too. (via Hacker News) Think Bayes — an introduction to Bayesian statistics using computational methods. The State of Jav...

Comments


Copyright © 2016 Regator, LLC